Confidential

2.1.3.3 Interface pin assignments

Table 2.1.5 TM-T88IIIPrinter Status and Signals

Pin

Signal

Signal

Function

 

 

 

 

 

Number

name

direction

 

 

 

 

 

 

 

 

 

 

 

 

 

1

FG

--

Frame ground

 

 

 

 

2

SD1

Output

Transmit data

 

 

 

 

3

SD2

 

 

 

 

 

 

 

 

 

 

 

 

 

4

RD1

Input

Receive data

 

 

 

 

5

RD2

 

 

 

 

 

 

 

 

 

 

 

 

 

7

SG

--

Signal ground

 

 

 

 

8

DR1

Output

When DTR/DRS is selected, this signal indicates whether the host

9

DR2

 

computer is BUSY or READY.

 

 

 

 

 

 

 

1) DR1>DR2 indicates that the printer is READY and DR1<DR2

 

 

 

 

 

indicates that the printer is BUSY. The BUSY condition can be

 

 

 

changed depending on the offline conditions set by the DIP switches

 

 

 

(refer to Section 3.3.3).

 

 

 

 

 

 

 

When the DTR/DSR control is selected, the printer becomes the

 

 

 

BUSY state (DR1<DR2) under the following conditions.

 

 

 

 

 

 

 

Printer status

DIP SW 2-1 status

 

 

 

 

 

 

ON

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. During the period from when the power is

BUSY

 

BUSY

 

 

 

 

 

 

 

turned on (including resetting using the

 

 

 

 

 

 

 

 

 

 

interface) to when the printer is ready to

 

 

 

 

 

 

 

 

 

 

receive data.

 

 

 

 

 

 

 

 

 

2. During the self-test.

BUSY

 

BUSY

 

 

 

 

 

 

3. When the cover is open.

—

 

BUSY

 

 

 

 

 

Offline

4. During paper feeding using the paper

—

 

BUSY

 

 

 

 

 

 

feed button.

 

 

 

 

 

 

 

 

5. When the printer stops printing due to a

—

 

BUSY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

paper-end. (only when the paper roll is

 

 

 

 

 

 

 

 

 

 

not present)

 

 

 

 

 

 

 

 

 

6. During macro executing standby status.

—

 

BUSY

 

 

 

 

 

 

7. When a temporary abnormality occurs in

—

 

BUSY

 

 

 

 

 

 

 

the power supply voltage.

 

 

 

 

 

 

 

 

 

8. When an error has occurred.

—

 

BUSY

 

 

 

 

 

 

9. When the receive buffer becomes full.(*1)

BUSY

 

BUSY

 

2)When XON/XOFF control is selected:

The signal indicates whether the printer is correctly connected and is ready to receive data. SPACE indicates that the printer is ready to receive data. The signal is always DR1>DR2 (READY) indicates that the printer is ready to receive data. The signal is always DR1>DR2 except in the following cases:

•During the period from when the power is turned on to when the printer is ready to receive data

•During the self-test

TITLE

TM-T88IIIseries

SHEET

NO.

REVISION

 

EPSON Specification (STANDARD)

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SHEET

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Image 34
Epson TM-T88III Series specifications SD1, SD2 RD1, RD2, DR1, Busy
Page 33 Page 35

TM-T88III Series specifications

The Epson TM-T88III Series is among the most popular thermal receipt printers available in the market, engineered for high performance and versatility in point-of-sale (POS) environments. Known for its reliability and efficiency, the TM-T88III is particularly suited for retail, hospitality, and other service-oriented industries where quick and accurate printing is essential.

One of the standout features of the TM-T88III is its ease of use. With a compact design, the printer can fit seamlessly into various workspaces, thereby saving valuable counter space. It features a simple plug-and-play setup, which facilitates quick installations and rapid deployment in any retail or service environment.

In terms of printing capabilities, the TM-T88III supports high-speed printing, with a speed of up to 200 mm per second. This speed is crucial in busy settings, as it significantly reduces customer wait times. The printer utilizes thermal printing technology, which does not require ink or toner, thus resulting in lower operational costs and minimal maintenance. The long-lasting thermal print head ensures that businesses can rely on the printer for thousands of receipts before needing a replacement.

The Epson TM-T88III series also supports multiple connectivity options, including USB, Ethernet, and serial ports. This flexibility allows the printer to integrate seamlessly into existing systems, whether you are using a traditional POS terminal or a mobile device. Furthermore, it supports various operating systems, including Windows, iOS, and Android, making it a versatile choice for businesses.

Additionally, the TM-T88III comes equipped with advanced features such as autocutter technology, which ensures that receipts are cut cleanly and consistently, enhancing the customer experience. Its ability to print graphics, logos, and barcodes adds further value, allowing businesses to customize receipts and promotional messages easily.

Energy efficiency is another characteristic of the TM-T88III, as it complies with international energy-saving standards. This not only contributes to greener business practices but also reduces electricity costs.

In summary, the Epson TM-T88III Series is a reliable, efficient, and feature-packed thermal receipt printer that meets the demands of fast-paced retail and hospitality environments. With its high-speed printing, versatile connectivity options, and user-friendly design, businesses can count on the TM-T88III to enhance their operational efficiency and customer satisfaction. Whether you’re looking for reliability, performance, or cost-effectiveness, the TM-T88III stands out as a preferred choice in contemporary POS printing solutions.
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